in a class test 3 marks are given for every correct answers - 2 marks are given for every incorrect answers and no marks for not attempt any questions Radhika score 20 marks if she has got 12 correct answer,how many questions has she attempted incorrectly
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Step-by-step explanation:
Radhika scored 12×3=36 marks. as 3 marks are for correct answer
final score of radhika is 20.
she got 16 marks negative. as −2 marks are for incorrect answer
therefore she made
16/2=8 incorrect answer.
2) Mohini scored 7×3=21 marks. as 3 marks are for correct answer
final score of radhika is −5.
she got 26 marks negative. as −2 marks are for incorrect answer
therefore she made
26/2 =13 incorrect answer.
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